add rspotify and bump ruby version

.ruby-version

@@ -1 +1 @@
-1.9.3
+2.0.0-p594

Gemfile

@@ -4,7 +4,8 @@ gem 'sinatra'
 gem 'rake'
 gem 'foreman'
 gem 'thin'
-gem 'meta-spotify'
+gem 'pry'
+gem 'rspotify'
 
 group :development do
   gem 'shotgun'

Gemfile.lock

@@ -5,6 +5,8 @@ GEM
     daemons (1.1.9)
     diff-lcs (1.2.2)
     eventmachine (1.0.3)
+    faraday (0.9.1)
+      multipart-post (>= 1.2, < 3)
     foreman (0.62.0)
       thor (>= 0.13.6)
     formatador (0.2.4)
@@ -17,16 +19,30 @@ GEM
     guard-rspec (2.5.2)
       guard (>= 1.1)
       rspec (~> 2.11)
-    httparty (0.10.2)
-      multi_json (~> 1.0)
-      multi_xml (>= 0.5.2)
+    hashie (3.4.0)
+    jwt (1.4.0)
     listen (0.7.3)
     lumberjack (1.0.3)
-    meta-spotify (0.3.1)
-      httparty (> 0.8)
     method_source (0.8.1)
+    mime-types (2.4.3)
     multi_json (1.7.2)
     multi_xml (0.5.3)
+    multipart-post (2.0.0)
+    netrc (0.10.3)
+    oauth2 (1.0.0)
+      faraday (>= 0.8, < 0.10)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      multi_xml (~> 0.5)
+      rack (~> 1.2)
+    omniauth (1.2.2)
+      hashie (>= 1.2, < 4)
+      rack (~> 1.0)
+    omniauth-oauth2 (1.2.0)
+      faraday (>= 0.8, < 0.10)
+      multi_json (~> 1.3)
+      oauth2 (~> 1.0)
+      omniauth (~> 1.2)
     pry (0.9.12)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
@@ -38,6 +54,9 @@ GEM
       rack (>= 1.0)
     rake (10.0.4)
     rb-fsevent (0.9.3)
+    rest-client (1.7.3)
+      mime-types (>= 1.16, < 3.0)
+      netrc (~> 0.7)
     rspec (2.13.0)
       rspec-core (~> 2.13.0)
       rspec-expectations (~> 2.13.0)
@@ -46,6 +65,9 @@ GEM
     rspec-expectations (2.13.0)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.13.0)
+    rspotify (1.12.0)
+      omniauth-oauth2 (~> 1.1)
+      rest-client (~> 1.7)
     shotgun (0.9)
       rack (>= 1.0)
     simplecov (0.7.1)
@@ -70,11 +92,12 @@ PLATFORMS
 DEPENDENCIES
   foreman
   guard-rspec
-  meta-spotify
+  pry
   rack-test
   rake
   rb-fsevent
   rspec
+  rspotify
   shotgun
   simplecov
   sinatra